Alloy 400，Monel 400 Strip，UNS N04400，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA11，American Specs:AMS 4574 Tube AMS 4575 (Tube *) AMS 4675 Bar and Forgings AMS 4730 Wire AMS 4731 Wire and Ribbon AMS 4544 Sheet, Strip and Plate QQ-N-281 ASTM B164，German Specs:

### **Alloy 400 / Monel 400 Strip (UNS N04400) - Product Introduction** **Overview** **Alloy 400** (commercially known as **Monel 400**) is a nickel-copper alloy that demonstrates excellent corrosion resistance and good mechanical properties across various environments. **Monel 400 Strip** is a thin, flat-rolled product form that offers exceptional versatility for applications requiring precise dimensions, consistent thickness, and excellent surface finish. This product form is particularly valued for its combination of corrosion resistance and fabrication characteristics in specialized industrial applications. The UNS **N04400** designation guarantees consistent material quality and performance. Monel 400 strip maintains its superior properties from cryogenic temperatures up to approximately 540°C (1000°F), making it suitable for demanding applications in multiple industries. --- ### **Chemical Composition** The chemical composition is precisely controlled to ensure optimal performance in corrosive environments. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 63.0 (Minimum) | | **Copper (Cu)** | 28.0 - 34.0 | | **Iron (Fe)** | 2.5 (Maximum) | | **Manganese (Mn)** | 2.0 (Maximum) | | **Carbon (C)** | 0.3 (Maximum) | | **Silicon (Si)** | 0.5 (Maximum) | | **Sulfur (S)** | 0.024 (Maximum) | **Note:** The balanced nickel-copper composition provides outstanding resistance to both reducing and oxidizing environments, while the controlled iron content helps prevent chloride-induced stress corrosion cracking. --- ### **Physical Properties** Monel 400 strip exhibits consistent physical properties suitable for precision manufacturing. | Property | Value | | :--- | :--- | | **Density** | 8.80 g/cm³ (0.318 lb/in³) | | **Melting Point** | 1350 °C (2460 °F) | | **Electrical Resistivity** | 51 μΩ·cm at 20°C | | **Thermal Conductivity** | 22 W/m·K at 20°C | | **Thermal Expansion Coefficient** | 13.9 μm/m·°C (20-100°C) | | **Magnetic Permeability** | Essentially non-magnetic | --- ### **Mechanical Properties** Typical mechanical properties for Monel 400 strip: | Condition | Tensile Strength | Yield Strength (0.2% Offset) | Elongation (%) | Hardness (Rockwell) | | :--- | :--- | :--- | :--- | :--- | | **Annealed** | 550-690 MPa (80-100 ksi) | 240-380 MPa (35-55 ksi) | 35-45 | B65-80 | | **Cold Rolled** | 620-860 MPa (90-125 ksi) | 480-760 MPa (70-110 ksi) | 15-30 | B80-100 | --- ### **International Standards** Monel 400 strip complies with major international standards: | Standard Organization | Standard Number | Specification | | :--- | :--- | :--- | | **ASTM** | ASTM B127 | Standard Specification for Nickel-Copper Alloy Plate, Sheet, and Strip | | **ASME** | SB-127 | Boiler and Pressure Vessel Code | | **ASTM** | ASTM B164 | Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire | | **DIN** | 2.4360 | NiCu30Fe | | **EN** | EN 2.4360 | Nickel-Copper Alloy Strip | | **ISO** | ISO 6208 | Nickel-copper alloy plate, sheet and strip | --- ### **Product Applications** **Electronic and Electrical Components:** - Spring contacts - Connector components - Lead frames - Battery components - Electrical shunts **Industrial Applications:** - Chemical processing equipment linings - Heat exchanger components - Precision springs - Fastener manufacturing - Bellows and expansion joints **Marine and Offshore:** - Marine instrument components - Corrosion-resistant fasteners - Electrical connectors in marine environments - Communication equipment parts **Automotive and Aerospace:** - Fuel system components - Sensor elements - Precision springs - Fasteners and clips - Electrical connectors **Other Specialized Applications:** - Medical instrument components - Pharmaceutical processing equipment - Chemical analysis equipment - Precision mechanical parts - Watch and instrument components --- ### **Key Advantages** - **Precision Dimensions:** Consistent thickness and width tolerances for manufacturing applications - **Excellent Surface Quality:** Smooth surface finish suitable for precision applications - **Superior Corrosion Resistance:** Outstanding performance in seawater, acids, and alkaline solutions - **Good Spring Properties:** Excellent for spring applications in corrosive environments - **Excellent Formability:** Can be easily stamped, bent, and formed into complex shapes - **Non-Magnetic Characteristics:** Essential for electronic and sensitive instrumentation applications - **Consistent Mechanical Properties:** Uniform properties throughout the coil length - **Good Weldability:** Can be welded using standard techniques including resistance welding Monel 400 Strip (UNS N04400) provides an ideal combination of corrosion resistance, mechanical properties, and fabrication characteristics for precision components requiring reliable performance in demanding environments. Its consistent quality and versatile manufacturing capabilities make it particularly valuable for electronic, electrical, and precision mechanical applications.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1670 gallon liquid totes Special package is available on request.